using System;

using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Crypto.Parameters
{
	public class ElGamalKeyParameters
		: AsymmetricKeyParameter
	{
		private readonly ElGamalParameters parameters;

		protected ElGamalKeyParameters(
			bool				isPrivate,
			ElGamalParameters	parameters)
			: base(isPrivate)
		{
			// TODO Should we allow 'parameters' to be null?
			this.parameters = parameters;
		}

		public ElGamalParameters Parameters
		{
			get { return parameters; }
		}

		public override bool Equals(
			object obj)
		{
			if (obj == this)
				return true;

			ElGamalKeyParameters other = obj as ElGamalKeyParameters;

			if (other == null)
				return false;

			return Equals(other);
		}

		protected bool Equals(
			ElGamalKeyParameters other)
		{
			return Platform.Equals(parameters, other.parameters)
				&& base.Equals(other);
		}

		public override int GetHashCode()
		{
			int hc = base.GetHashCode();

			if (parameters != null)
			{
				hc ^= parameters.GetHashCode();
			}

			return hc;
		}
	}
}
